The Dingledot

Now, can you catch that Dingledot?
I need to get him quite a lot.
He is the only one I’ve got.
You’ll find he’s very hard to spot.
He might be sailing on a yacht
or hiding in a carry-cot,
or staying with a hairy Scot.
He could be here – or maybe not.
And do be sure, when he’s been got,
to tie him in the tightest knot.
Why do I need a Dingledot?
I want to pop him in the pot!
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